4 Generation Circle Diagram: |
| Grietje Schokker Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Jacob Kwakman < Frederik Kwakman |
| Jacob Kwakman Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Grietje Schokker < Frederik Kwakman |
| Frederik Kwakman Pedigree Tree Pedigree Map Descendancy Chart Ancestry Chart Compact Chart Circle Diagram Hourglass Chart Interactive Tree Cornelia Voortman |